Method and apparatus for transmitting reference signal in wireless communication system
a wireless communication system and reference signal technology, applied in the field of wireless communication, can solve the problems of path loss, noise, fading generation, abnormal characteristics of wireless channels, etc., and achieve the effect of efficient transmission
Active Publication Date: 2014-08-19
LG ELECTRONICS INC
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Benefits of technology
The patent is about a way to efficiently transmit certain signals between a base station and a user device. These signals are important for ensuring successful communication. The invention takes into account the time it takes to process data and the information needed to control the device. By doing this, the signals can be transmitted more efficiently. In simple terms, this technology allows for better communication between the base station and user device.
Problems solved by technology
However, a wireless channel has abnormal characteristics, such as path loss, noise, a fading phenomenon due to multi-path, InterSymbol Interference (ISI), and the Doppler Effect resulting from the mobility of a user equipment.
In wireless communication system environments, fading is generated because of multi-path time latency.
If such a method is used, the density of reference signals is reduced, thereby deteriorating the performance of channel estimation.
Method used
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[0034]A technology below can be used in a variety of wireless communication systems, such as Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Orthogonal Frequency Division Multiple Access (OFDMA), and Single Carrier Frequency Division Multiple Access (SC-FDMA). CDMA can be implemented using radio technology, such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. TDMA can be implemented using radio technology, such as Global System for Mobile communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE). OFDMA can be implemented using radio technology, such as IEEE 802.11(Wi-Fi), IEEE 802.16(WiMAX), IEEE 802-20, or Evolved UTRA (E-UTRA). IEEE 802.16m is the evolution of IEEE 802.16e, and it provides a backward compatibility with an IEEE 802.16e-based system. UTRA is part of a Universal Mobile Telecommunications System (UMTS). 3rd Generation Partnership Project (3GPP) ...
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A method and apparatus of transmitting a reference signal in a wireless communication system is provided. A transmitter generates the reference signal, maps the reference signal to a resource region, and transmits the reference signal, mapped to the resource region, to a user equipment (UE). The resource region to which the reference signal is mapped is determined based on at least one of a hybrid automatic repeat request (HARQ) processing time for backhaul link transmission, a position of a backhaul link sub-frame, and a transmission period of the reference signal.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is the National Stage filing under 35 U.S.C. of International Application No. PCT / KR2010 / 001622, filed on Mar. 16, 2010, which claims the benefit of U.S. Provisional Application Ser. Nos. 61 / 166,779, filed on Apr. 6, 2009, 61 / 161,419, filed on Mar. 19, 2009, and 61 / 161,075, filed on Mar. 18, 2009, the contents of which are all hereby incorporated by reference herein in their entirety.TECHNICAL FIELD[0002]The present invention relates to wireless communications, and more particularly, to a method and apparatus for transmitting a reference signal in a wireless communication system.BACKGROUND ART[0003]The next-generation multimedia wireless communication systems which are recently being actively researched are required to process and transmit various pieces of information, such as video and wireless data as well as the initial voice-centered services. The 4th generation wireless communication systems which are now being deve...
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IPC IPC(8): H04W72/04H04L1/00H04L1/18
CPCH04L1/188H04L1/0027H04L1/1812
Inventor NOH, MIN SEOKCHUNG, JAE HOONKWON, YEONG HYEON
Owner LG ELECTRONICS INC